<template>
  <div>
    <table border="1" width="700" style="border-collapse: collapse">
      <caption>
        购物车
      </caption>
      <thead>
        <tr>
          <th><input type="checkbox" v-model="isAll" /> <span>全选</span></th>
          <th>名称</th>
          <th>价格</th>
          <th>数量</th>
          <th>总价</th>
          <th>操作</th>
        </tr>
      </thead>
      <tbody>
        <GoouWuRender v-for="(item, index) in goodList" :key="index"
        :name="item.name"
        :num="item.num"
        :checked="item.checked"
        :price="item.price"
        :index ="index"
        @addFn="addFn"
        @toolFn="toolFn"
        @delFn="delFn"
        @changeChecked="getChecked">
        </GoouWuRender>
      </tbody>
      <tfoot>
      <GoouWu :sum="goodList"></GoouWu>
      </tfoot>
    </table>
  </div>
</template>

<script>
import GoouWu from "./components/gouwuche-sum.vue";
import GoouWuRender from "./components/gouwuche-render.vue";
export default {
  components: {
    GoouWu,
    GoouWuRender
  },
  data() {
    return {
      goodList: [
        {
          name: "诸葛亮",
          price: 1000,
          num: 1,
          checked: false,
        },
        {
          name: "蔡文姬",
          price: 1500,
          num: 1,
          checked: false,
        },
        {
          name: "妲己",
          price: 2000,
          num: 1,
          checked: false,
        },
        {
          name: "鲁班",
          price: 2200,
          num: 1,
          checked: false,
        },
      ],
    };
  },
  methods: {
    addFn(index) {
      this.goodList[index].num++;
    },
    toolFn(index) {
      if (this.goodList[index].num <= 0) return;
      this.goodList[index].num--;
    },
    delFn(index) {
      this.goodList.splice(index, 1);
    },
    getChecked(checked,index){
      this.goodList[index].checked = checked

    }
  },
  computed: {
  
    isAll: {
      get() {
        return this.goodList.every((item) => item.checked == true);
      },
      set(val) {
       
        return this.goodList.forEach((item) => (item.checked = val));
      },
    },
  },
};
</script>

<style>
</style>